3 Hidden Knowledge of Automobile Fuel Tank Cap

The car owners' friends always go to the gas station to refuel every day. Generally, the staff of the gas station personally operates the refueling. The car owners don't know much about the fuel tank cap. Do you find these three hidden functions on the fuel tank cap?

Fuel grade

I believe that everyone knows what gasoline they have in their cars, and they will not let the staff fill their cars with the wrong fuel. But if a friend borrows his car, he doesn't bother to ask, so he just needs to open the fuel tank cap.

Tyre pressure

In addition to the fuel label on the fuel tank caps of the car, there is also a tire inflation pressure sign. I believe that everyone is familiar with tire pressure, which is related to our driving safety. The air pressure is the root of the tire. If the air pressure is too high or too low, the life of the tire will be affected. The fuel tank cap is marked with a description of air pressure and changes in vehicle load, which many drivers do not pay attention to.

Especially when running at high speed, the tire burst is caused by insufficient or too high tire pressure. If there are too many people in the car, it is likely to lead to car destruction and death. So if you don't understand, be sure to open the fuel tank cap to see the instructions. If you know enough, you can greatly extend the service life of tires.

Drain hole

In addition to the above two, the car fuel tank cap is also equipped with a drain hole. When the car is refueled, gasoline will likely spill out and gather at the fuel tank's mouth. The purpose of the drain hole is to discharge the liquid. After all, these liquid accumulations will cause some damage to the engine. Therefore, the drain hole also needs to be cleaned regularly.

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